Sheet-metal hub for chair-irons



0. ELTON.

SHEET METAL HUB FOR CHAIR moms.

APPLICATION FILED 58.15. I919.

Pafented Sept. 16, 1919.

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TTORNEX 0. ELTON.

SHEET METAL HUB FOR CHAIR moms.

APPLICATION FILED FEB. l5, i919.

Patented Sept. 16, 1919.

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OLA]? ELTON, OIE' PORT WASHINGTON, WISCONSIN, ASSIGNOR TO GILSON MANUFACTUR- ING COMPANY, A CORPORATION OF WISCONSIN.

SHEET-METAL HUB FOR CHAIR-IRONS.

Specification of Letters Patent. Patented Sept, 16, 1919,

Application filed February 15, 1919'. SerialNo. 277,143.

' termed the hub? The principal objects of the invention are to produce a light, rigid, hub of sheetmetal, and so design the principal part thereof as will adapt it to be formedmtegrally and readily stamped and folded to form with but negligible waste of material. Other minor objects of the invention w1ll hereinafter appear, and the novel features thereof will be particularly pointed out in the appended claims.

Referring to the drawings Figure 1 is a side elevation of a sheetmetal chair-hub embodying my invention, the same being shown with certain of the auxiliary parts of the chair-iron in position thereon;

Fig. 2 is a radial vertical sectional view of the hub, the lower portion of thesame being referred to being omitted;

Fig. 3 is a detail in plan of the blank before bending and from which is formed 1 the principal part of the hub; and

Fig. 4 is a transverse sectional view taken on the dotted lines 1-4: of Fig. 1.

Similar numerals of reference indicate similar parts in all the figures of the drawm s.

The hub proper consists of the upper and lower annular plates 13 and 6, respectively, and the connecting sidewalls 5, and central sleeve 11. p

The sleeve as is usual, carries the adjusting-standard 18, and the latter, in turn, carries the J-washer 23, and hand-wheel 19. The latter is flanged, as at 21, the flange being engaged by the goose-neck standard 22,

mounted on the upper plate 13. These auxiliary parts thus referred to form no part of my invention, the latter having entirely to do with the hub proper. l

In Fig. 3 of the drawing I have illustrated in detail the blank, before bending, from chair-legs.

and the auxiliary parts above 1 which the lower plate and parts carried thereby, is formed. This lower plate, following the usual custom, is, in this instance, clrcular, and is provided with a central annular opening 9, which is surrounded, if desired, by an upturned narrow flange 10.

From the edge of the plate radiate the sidewalls 5, and these alternate with radial extensions 7, designed to extend under the chair-legs and aid in supporting the same. Extensions 7 are at intervals provided with counter-sunken screw-receiving holes 8, the screws (not shown) extending upwardly through said holes and into the wooden Between the extensions 'Tfor supporting the legs, the side-walls 5 are bent upwardly at a right-angle to the plate 6and upon the curved dotted lines a. (see Fig. 3) so that in cross-section said walls are convexed or segmental in shape or dis position and therefore readily receive the upper plate 13,the edge of which, in the present instance, is annually flanged so as to inclose the upper ends of said walls. The walls may be of any desired shape in crosssection, and so may the annular flange of the'top-plate be made otherwise than annular in order to conform to such walls.

The upper ends of the walls and the upper plate 13 may be secured together in any desired manner, as for instance, they may be spot-welded, or as shown in Fig. 2, each of the walls may be formed with a slot 16, to receive and interlock with a corresponding bent tongue 17, formed at intervals at the lower edge of the flange of the upper plate.

The upper plate is further provided with a central opening 14, from which may depend a narrow flange 15, the opening and flangereferred to corresponding with the opening and flange, 9 and 10, respectively, mentioned in connection with the lower plate.

The sleeve 11, heretofore referred to, if employed, is preferably formed of sheetmetal, and as best illustrated in Fig. 2, its ends are flared, as at 12, to receive the flanges 10 and 15 of the bottom and upper plates respectively. If desired, the two plates and the ends of the sleeve may be spot-welded. Any other convenient means may be employed for connecting the sleeve and plates, the means shown merely being a suggestion.

It will be observed that the principal part l ne "a .Wal-ls upon straight linesinstead of curved, the hub'would begiven an "octagonalap- -;pearanc e. 'lhe external surfacesof the sideof the hub is the lower portion comprising the "lower p'l'ate, the side w'a'lls and the legsupporting extensions, and that these parts are all formed integral. It will be understood that the spaces betweenthe side-walls, when the latter are bent to their vertical po- 5 'siti'ons, receive the inner ends "of the usual chair-legs, and also that the spaces between the latter, usually requiring the'addition of filler-blocks, are closed by said side-walls, thefinished hubyaside from the legs, being cylindrical by -r'eason of {the fact that the side-walls are bent upon. the curved dotted Of course, 'by bending the side- ;walls may be ornamented;in any way desired, as, ion-instance, grained in imitation of wQod,-and thus whilethe chair-base would strength .g nd durability and also; be v much iiact, that very little waste will result will be claimg is reagdilyappreciated.

While I have shownand described, and

.prefer, tog' form the bottom-plateti with the integral side-walls 5 yet it is within thescope ofany invention to form such "side-walls integral-with-theltop plate. Having described my invention, what I 1. A- sheet-rmetal hub for chant-irons, the

"sal ne comprising a bott0m-plate having a 40' central opening, leg-supporting extensions radiating from the plate, integrally formed side-walls bent-upwardly from the plate and alternating with each of the leg-supporting 'exten sions,an upper or top-plate mounted on ends of each of thefslde-walls and having an opening corresponding with that of the botindependent of and connected to the upper tom-plate, and a sleeve connecting the openingsof the'two plates.

-; 2.- A sheet-metal hub for chairirons, the

same-comprising 'a bottom-plate having a central opening, integrally formed sidewalls spaced apart to form leg-receiving openings and bent upwardly from the plate,

a top-plate mounted upon and secured to the upper ends of each of the said side-walls and independent thereof and having an opening corresponding with that of the bottom-plate, 'and'a sleeve connecting the openings ofthe two plates.

3. A sheet-metal hub for chair-irons, the

same coin-prisingfa bottom plate having a central opening, integrally formed side-' walls5 segrnental cross-section, and spaced apart to form intermediate leg-receiving openings, a top-plate mounted upon and seoured to the upper ends of each of the side- 'walls independent thereof and having an opening corresponding to the central opening of thethebottom-plate, and a sleeve connecting the openings of the two plates.

*4. 'A sheet-metal hub for chair-irons, the same comprising a bottom-plate having a central flanged opening and surrounding integrally formed side-walls spaced apart to form leg-receiving openings, a top-plate surmounting independent of and secured to each of the sidewalls and provided with a central flanged opening, and a sleeve having its upper ends flared to receive the flanges of and connecting the openings of the two plates.

5. A sheet-1netal hub for chair-irons, the same comprising a bottom-plate having a central opening and upwardly disposed integrally formed side-walls, the latter being spacedapart to form leg-receiving openings and having their upper ends provided with mortises, a top-plate surmounting' the side walls. and having a central opening corresponding tothat of the bottonrplate and provided with a depending marginal flange embracing said side-walls, said flange being provided with tongues bent to engage said mortises.

6. A sheet-metal hub for chair-irons, the same comprising a bottom-plate having a central opening, upwardly disposed integrally formed side-walls spaced apart to form intermediate legrece1ving openings, and leg-supporting extensions integrally formed and extending radially from the plate coincident with said leg-receiving openings, a top-plate having a central opening alining with that of the bottom-plate and having a' marginal flange embracing the upper ends of the side-walls, means for securing said top-plate in position upon the upper ends of the side-walls, and a sleeve connecting the central openings of the two plates.

7 A sheet-metal hub for chair-irons, the same comprising a bottom-plate having a central opening "and leg-supporting extensions radiating from the plate, an upper or top-plate having a central "opening, a sleeveconnec'ting the openings of the two plates, and vertical side-walls integrally formed with one of said plates and having their ends connected to the other of said plates, said sidewalls being spaced apart to produce leg-receiving sockets and alternating with the leg-supporting extensions of the bottom-plate.

8. A sheet-metal hub for chair-irons, the same comprising a bottom-plate having a central opening and marginal integrally formed vertically disposed side-walls spaced apart to produce v intermediate leg-receiving openings, and a top-plate independent of 9. A sheet-metal hub for chair-irons, the

same comprising a bottom-plate and legsupporting extensions radiating from the plate, an upper or top-plate, vertical sidewalls integrally formed with one of said plates, said side-walls alternating with the leg-supporting extensions of the lower plate and spaced apart to form intermediate leg receiving openings coincident with the leg- 15 supportlng extensions and means for securing the ends of said side-walls to that plate against which they abut.

In testimony whereof I have signed my name to this specification in the presence of 20 two subscribing witnesses.

OLAF ELTON.

Witnesses:

H. S. WILSON, T. A. BOERNER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

